This trace is ES 3.0 based and shader heavy.

Test: angle_perftests --gtest_filter="*slingshot_test2*"
Tbr: jmadill@google.com,timvp@google.com
Bug: b/185595371
Bug: angleproject:5877
Change-Id: I3d66a5f818b33581b4237e8a9efc56af5666d98b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2832657Reviewed-by: Cody Northrop <cnorthrop@google.com>
Commit-Queue: Cody Northrop <cnorthrop@google.com>